Stereoscope.



No. 669,604.. Patented Mar. I2, I901. w. n. TWIFORD.

STEHEOSCOPE.

Application filed 1hr. 13, 1900.

(No Model.)

ww IVH O Wm "6%Ww *UT W' TH: Nonms mcns c0 wnovoumu, WASHINGTON n c i l l UNITED I STATES ATnNT @rricn.

\VILLIAM R. TVVIFORD, OF UNIVERSITY PLACE, NEBRASKA.

STEREOSCQPE.

SPECIFICATION forming part or? Letters Patent No. 669,604, dated March 12, 1901.

Application filed March 18, 1900. Serial No. 8,548. (No model.)

T0 whom it may concern.-

Be it known that 1, WILLIAM R. TWIFORD, residing at University Place, in the county of Lancaster and State of Nebraska, have invented certain useful Improvement-sin Stereoscopes; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention has relation to a new and novel improvement in stereoscopes.

The aim of my invention is to provide an educational and entertaining device which at the same time shall be arranged as a housin g or receptacle, within which are reinovably held certain photographs or pictures which are to be used in this exhibiting device.

In the accompanying drawings, Figure 1 shows a side elevation,with portions removed, of a stereoscope embodying my invention, while Fig. 2 shows a broken enlarged detached view of one of the holders as used in my device.

My invention embodies, essentially, a base 9, preferably hollow, from whichextends a hub 11, as is shown in Fig. 1.

Working through a slot within the base 9 is an ordinary T-shaped operating-handle 7, which is pivotally secured to a lever 6, mounted upon a shaft 8.

Movably working within the hollow hub 11 is a stem 5, which is curved outward at its upward end, as is shown in Fig. 1.

Working upon the hub 11 is a bracket 10, which above is provided with a circular housing 1, at one point being cut away to provide the opening 00.

Passing through the sides 2 of the housing 1 is a shaft 3, which supports a drum 2, and to this drum are secured a plurality of cars 2- which ears in turn hold a plurality of springholders 23, as is shown more clearly in 2, and within which ears are removably held photographs or pictures 20 to be exhibited.

Adjustably secured to the bracket 10 is an arm 13, held to the bracket 10 by means of a set-screw 12, so that this arm 13 may be carried toward or from the housing 1 to provide an adjustment for the lenses used in viewing the exhibits within the housing. This arm 13 at its forward end is in the form of a socket, within which socket is held the handle 15, which, by means of a union 25, pivotally supports the lens-holder 16, used in this device, this lens-holder having its range in alinemeut with the opening a: within the hous-' ing 1, as is shown in Fig. 1.

The exhibits or pictures 20, which are secured to the hub 2, are of a length so that when they are pendent they easily work with in the casing, as is shown in Fig. 1.

The drum 2 upon one side is provided with a series of pins 22, which are adapted to be engaged by a pawl 21, which pawl is secured to and forms part of the lever l, pivotally secured to the shaft 3 and with its free end secured to the bar 5, as is shown in Fig. 1.

The lever 6 is so posted that its inwardlyextending end is immediately below and supports the rod 5, so that the housing 1 may be freely revolved.

The bracket 10 is hollow, as is also the hub 11, and passing through this hub and bracket and snugly fitting within the same is the bar 5, so that the hub and bracket are connected as long as the bar 5 is revolubly held within the hub. This enables the whole upper portion of the apparatus to be readily removed from the stand. The bar 5 revolves with the housing and freely turns upon the end of the lever 6, but is in no waysecured to the same.

At a suitable point the housing 1 above is provided with a downwardly-extending serrated lip, having the shoulders 19 and the lip 18 so arranged that photographs or exhibits 20, which are of a certain length, successively feed into-the serrations, the whole being so arranged that the exhibit in coming in contact with the lip 18 is held in avertical position to permit a free inspection of the photographs through the lenses.

Having thus described my said invention, what claim as new, and desire to secure by United States Letters Patent, is-

In a stereoscope of the character described, a hollow supporting-standard, a lever pivoted within said standard, provided with a projecting operating-button, an opening within said standard, a shaft extending through said opening and resting below upon said lever, a hollow standard revolubly surrounding said shaft and provided with a suitable housing, nifying' device held adjacent said housing and a revolving drum Within said housing, pro in alinelnent with said pictures.

Vided With a plurality of exhibiting-piei'ures, TILLIAM R TVVIFORD said drum being provided with a ratchet, a pawl pivoted within said housing, engaging In presence of I said ratchet and being secured to said shaft, J. WEsLEY DUSENBERRY, an opening Within said housing, and a mag FRANK WHIPPERMAN. 

